Improvement in soldering-tools



2 4She-ets--Sheet 2'. A

l.. SEARS. Soldering Tools.

Patentedl J ly 7,- 153-74` N o. l 5 2,7 7 0.

IVENTOR fm/u any WITNESSES TL'E GRAPHIC C0. PHOTO-LITHSEnl PARK PLACEIMY.

U 4NITEE STATES JOSEPH SEARS, OF CHICAGO,

iILLINoIs IMPROVEMENT IN SOLDERING-TOOLS.

Specification forming part of Letters Patent No. 152,770, dated July 7, 1874; application led April 7, 1874. f

CAsE B. p

`To all whom it may concern Be it known that I, JOSEPH SEARS, ot' the city of Chicago and county ofCook, in the State of Illinois, have invented certain new and useful Improvements in Soldering Apparatus, of which the following is a specilication.

These improvements relate primarily to the the tip and plug are attached to the handletube, so as to be readily removed therefrom when a new tip is required. The invention consists, secondly, in a shield or deiiector formedon the coupling-collar, and supported thereby behind the tip. The invention cousists, thirdly, in a rest or holder for employment in combination with a shield or deiiector behind the tip. The invention consists, fourthly, in a sheathing or coating of tin plate applied within the dies to protect the rear end ofthe tip or copper from oxidation.

Figure 1 is a vertical longitudinal section, illustrating the first three parts of this invention. Fig. 2 is a perspective view of the rest or holder. Fig. 3 is an elevation of a portion of the tool, illustrating some slight modifications. Fig. 4 isa full side elevation of another tool, illustrating the fourthpart of the invention and certain modiiications in the subject-matter of the first part ofthe invention. Fig. 5 is a longitudinal section ofthe same on a larger scale. Fig. (i is a transverse section on the lille (i b', Fig. 5.

Like letters ot' reference indicate corresponding parts in the several figures.

The soldering-tool, which is the primary part ot' this apparatus, consists of a hollow tip or copper', A, a wooden handle; B, an axial handle-tube, C, a plug or nipple, D, attached to the tip, and acoupling-collar, E,

for attaching the plug and tip to the handle- I tube, with or withouta shield or deflector, F, formed on the couplingcollar, as illustrated in Figs. l and 4. The other part of the apparatus consists of a holder or rest, H, Figs. l and 2, to receive and support the tool when out of use, and to co-operate with lthe internal jet and the shield or detlector F, to protect the copper from oxidation and to economize heat. The hollow tip or copper A may be. of any approved external shape and dimensions, and may be manufactured by any approved process. The flame-cavity e is adapted to receive one end of the plug or nipple D within it, and the latter is of small size, of gas-pipe, and in the illustration is screwed into the rear end ofthe tip. This construction is the subject-matter, in part, ot' another specification of even date herewith, where it is fully described.

In order to obviate any dificultywhich users might have in withdrawing the' plug from a worn tip when a new one is required, the coupling-collar D is provided as means for attaching the plug and tip to the handletube, so that they may he readily removed together. Tips with plugs applid will be furnished by the manufacturer, and the scrap-copper and old plugs may be separated and saved at leisure.

For the. reception of this collar the tip end of the handle-tube C is turned down, and a short screw-thread is cut at the proper point,

as illustratedi n Figs. 1, 5, and 6 5 or the thread 1 may extend back from the end, as illustrated in Fig. 3. The collar has a corresponding internal thread. To engage with the plug the collar is provided with a single set-screw, fr,

as illustrated in 1, but two or more screws,`

m2, may be employed, as illustrated in Fig. or the socket portion ot' the collar may be threaded, and the plug adapted thereto, as illustrated in Figs. AL and 5, and in this case the thread on the two ends ofthe plug may be continuous, as represented, or interrupted.

The shield or deiiector F, broadly considered, v

is the subject-matter, inpart, of the specification ofleven date herewith, to which reference has hereinbefore been made.

Supported in the manner herein described,

the shield or dclector imparts its advantages without multiplication. of parts. The same operates to protect the hand, to turn back the products of combustion, so as to cause them in the bench I when the holder is required.

The tube h comprises a flaring rear end to receive the tip and shield, and to closely embrace the latter, a middle section, cylindrical -or bulging in shape, and a contracted front end, through which the products of combustion escape when the tool is inthe holder.

When the surface of the bench is required, the holder may readily be taken out and laid aside.

The handle B may be wholly of wood, and tightened and strengthened by a wire, y, as represented.

The handle-tube C extends through the handle, and projects sufciently to receive the end of a flexible conducting-tube, J, as illustrated in Fig. l.

To render the tip A temporarily self-protected against oxidation, a sheathing or coating, c, Figs. 4 to 6, is applied to the rear end ofthe tip during its manufacture. This sheathing or coating consists of tinned sheet-iron applied within the dies. The point of the tip v becomes tinned in use, and thus protected.

The following is claimed as new in this invention, namely: l

l. The coupling-'collar E, applied to the handle-tube, in combination with the plug or nipple D ofsmall gas-pipe, applied internally to the hollow tip A, said coupling-collar serving to attach the said plug to the handle-tube, so that the plug and tip may be readily removed and replaced together, in the manner herein set forth.

2. The combination of the hollowr tip A, plug or nipple D, handle-tube C, couplingcollar E, and shield or detlector F, the latter being formed on' said collar and supported thereby, as herein shown and described.

3. The rest or holder H, in combination with a soldering-tool having a hollow tip with a heating-jet within the same, and a shield or deector, F, behind the tip, substantially as herein shownand described, for the purposes set forth.

4. A tip or copper, A, having a sheathing, a, of tin plateapplied to its rear endV during its manufacture, substantially as herein described, to protect the same against oxidation, as set forth.

In testimony of which invention I hereunto set my hand this 27th day of March, 1874.

JOSEPH SEARS.

Witnesses HENRY MoREHoUsE, HALs'rED BURNET. 

